(1) The Department of Economic Opportunity shall contract with the Department of Revenue, through an interagency agreement, to perform the duties of the tax collection service provider and provide other reemployment assistance tax collection services under this chapter. Under the interagency agreement, the tax collection service provider may only implement:

(a) The provisions of this chapter conferring duties upon the tax collection service provider.

(b) The provisions of law conferring duties upon the department which are specifically delegated to the tax collection service provider in the interagency agreement.

(2)(a) The Department of Revenue is considered to be administering a revenue law of this state when the department implements this chapter, or otherwise provides reemployment assistance tax collection services, under contract with the department through the interagency agreement.